EP3232996A1 - Système et procédé pour l'irrigation de l'anus et/ou d'une stomie - Google Patents

Système et procédé pour l'irrigation de l'anus et/ou d'une stomie

Info

Publication number
EP3232996A1
EP3232996A1 EP15816651.2A EP15816651A EP3232996A1 EP 3232996 A1 EP3232996 A1 EP 3232996A1 EP 15816651 A EP15816651 A EP 15816651A EP 3232996 A1 EP3232996 A1 EP 3232996A1
Authority
EP
European Patent Office
Prior art keywords
pump
irrigating liquid
reservoir
retention element
catheter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15816651.2A
Other languages
German (de)
English (en)
Other versions
EP3232996B1 (fr
EP3232996B8 (fr
Inventor
Niels Hvid
Richard Morgan Hickmott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coloplast AS
Original Assignee
Coloplast AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coloplast AS filed Critical Coloplast AS
Publication of EP3232996A1 publication Critical patent/EP3232996A1/fr
Publication of EP3232996B1 publication Critical patent/EP3232996B1/fr
Application granted granted Critical
Publication of EP3232996B8 publication Critical patent/EP3232996B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices
    • A61F5/442—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices having irrigation ports or means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/0208—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity before use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/0216—Pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/022—Volume; Flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0233—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs
    • A61M3/0254—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped
    • A61M3/0258—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped by means of electric pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0279—Cannula; Nozzles; Tips; their connection means
    • A61M3/0295—Cannula; Nozzles; Tips; their connection means with inflatable balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A61M2205/502—User interfaces, e.g. screens or keyboards
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk
    • A61M2210/1042—Alimentary tract
    • A61M2210/1064—Large intestine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0202—Enemata; Irrigators with electronic control means or interfaces

Definitions

  • the present invention relates to a system and a method for anal and/or stomal irrigation comprising a reservoir for an irrigating liquid, a catheter comprising a catheter tip for insertion into the rectum and/or stoma of a user, and an expandable retention element, such as an expandable balloon, for fixation of the catheter tip within the user's rectum or stoma.
  • the invention provides in particular a valve and tubing system for controlling the supply of the irrigating liquid to the catheter tip as well as the supply and the withdrawal of the irrigating liquid to and from the expandable retention element.
  • Fig. 1 shows an embodiment of a system for anal and/or stomal irrigation
  • Fig. 2 shows an embodiment of a tubing and valve system of an embodiment of a system for anal and/or stomal irrigation
  • Figs. 3-5 show respective embodiments of flow configurations in the tubing and valve system of Fig. 2;
  • Figs. 5a and 5b show embodiments of flow configurations in an alternative embodiment
  • Figs. 6 and 7 illustrate exemplary curves of temperature of an irrigating liquid in a reservoir during filling or refilling of irrigating liquid into the reservoir;
  • Fig. 8 illustrates an embodiment of a method for predicting a temperature of an irrigating liquid in a reservoir of a system for anal irrigation
  • Figs. 9A-9E illustrate displays of a user-operable control interface for controlling operation of the system.
  • Control of voluntary bowel functions is frequently limited or absent in patients suffering from certain disabilities, such as spinal injuries, multiple sclerosis or bifid spine. Such lack of control of voluntary bowel functions typically results in faecal incontinence or intractable constipation, as patients have significantly reduced ability to sense the presence of faeces in the colon terminal part and the rectum and to sense the evacuation stimulus. Patients having undergone stomal surgery wherein a catheterizable stoma is constructed may suffer from similar difficulties.
  • an irrigating fluid such as tap water or saline
  • an intermittent catheter with a tip which is configured and sized for insertion into the rectum or stoma, where it remains in a fixed position by an expandable inflation element, such as a balloon.
  • the balloon may be inflatable by air or by water.
  • transanal or transstomal irrigation systems has hitherto focussed on aspects of tubings, catheters and pumps. It is hence an object to improve known systems further, in particular by improving safety and user-convenience in relation to self-irrigation, and more particularly by improving control and operation of the expandable retention element.
  • Embodiments relate to a system for anal and/or stomal irrigation comprising:
  • a catheter comprising a catheter tip for insertion into the rectum and/or stoma of a user and for expelling of the irrigating liquid from the catheter tip, the catheter further comprising an expandable retention element for fixation of the catheter tip within the user's rectum or stoma; a tubing system providing a first conduit for the irrigating liquid between the reservoir and the catheter and providing a second conduit for the irrigating liquid between the reservoir and the expandable retention element;
  • valve system in the second conduit for controlling the flow of the irrigating liquid between the reservoir and the expandable retention element
  • a pump operable to pump the irrigating liquid from the reservoir to the catheter tip, the pump comprising a reversible pump, which is operable in one direction to pump the irrigating liquid into the expandable retention element for inflation thereof, and which is operable in a reverse direction to withdraw the irrigating liquid from the expandable retention element for collapsing thereof;
  • the pump and the valve system being controllable to selectively:
  • FIG. 1 For anal and/or stomal irrigation, said system comprising:
  • a catheter comprising a catheter tip for insertion into the rectum and/or stoma of a user and for expelling of the irrigating liquid from the catheter tip, the catheter further comprising an expandable retention element for fixation of the catheter tip within the user's rectum or stoma;
  • a tubing system providing a first conduit for the irrigating liquid between the reservoir and the catheter and providing a second conduit for the irrigating liquid between the reservoir and the expandable retention element;
  • valve system in the second conduit for controlling the flow of the irrigating liquid between the reservoir and the expandable retention element
  • a pump operable to pump the irrigating liquid from the reservoir to the catheter tip, the pump comprising a reversible pump, which is operable in one direction to pump the irrigating liquid into the expandable retention element for inflation thereof, and which is operable in a reverse direction to withdraw the irrigating liquid from the expandable retention element for collapsing thereof; said method comprising controlling and operating the pump and the valve system to selectively:
  • the pump may be manually or electrically driven.
  • the ability of the pump and the valve system to withdraw the irrigating liquid from the retention element for purging thereof allows the retention element to be purged in a controlled manner. Expansion of the retention element as well as collapsing thereof may hence be accurately controlled by adequate control of the pump and the valve system. Collapsing of the retention element by a controlled action, notably by forced purging caused by a pumping action of the pump, enables purging of the retention element even under circumstances, at which the retention element is expanded by a relatively low pressure, which is too low for the irrigating liquid to escape from the retention element merely be opening a valve of the valve system.
  • the pump is preferably an electrically driven pump, and the pump and the valve system are preferably controllable by an electronic control system.
  • the valve system and the tubing system may be configurable to withdraw the irrigating liquid from the retention element during purging thereof by conveying the irrigating liquid from the retention element directly into user's rectum or stoma without the irrigating liquid passing into or through the reservoir.
  • This incurs several benefits. Firstly, the user is released from encountering the possibly disturbing or uncomfortable experience of noting that irrigating liquid passes from the retention element, which is fixed in the user's rectum or stoma, back to the reservoir. Accordingly, user comfort and trust in the system is improved.
  • the irrigating liquid used for expansion may conveniently be used for irrigation (i.e. flushing of the bowel) without the need for any further temperature management for that part of the irrigating liquid.
  • the distance to be travelled by the irrigating liquid and hence power consumption of the pump may be minimized when the irrigating liquid is allowed to pass directly from the retention element to the catheter tip for irrigation of the bowel.
  • the pump, the valve system and the tubing system may be configurable to withdraw the irrigating liquid from the retention element during purging thereof by conveying the irrigating liquid from the retention element into the reservoir.
  • the pump comprises an electrical pump, which is reversible and thereby operable in one direction to pump the irrigating liquid into the expandable retention element for inflation thereof, and which is operable in a reverse direction to withdraw the irrigating liquid from the expandable retention element for collapsing thereof.
  • the ability of the pump to pump irrigating liquid into the retention element and to withdraw the irrigating liquid therefrom may thus be accomplished in an inexpensive manner by a pump, which is easy to operate and control.
  • the valve system within the tubing system is preferably configured to selectively cause one flow configuration selected from a first, second and third flow configuration at a time, wherein:
  • the first flow configuration is arranged to cause a transfer of the irrigating liquid, by means of said pump, from the reservoir into the expandable retention element;
  • the second flow configuration is arranged to transfer the irrigating liquid, by means of said pump, from the reservoir to the catheter;
  • the third flow configuration is arranged to transfer the irrigating liquid, by means of said pump, away from the expandable retention element.
  • the irrigating liquid is transferred from the reservoir to the expandable retention element for expansion thereof.
  • the irrigating liquid is transferred from the reservoir to the catheter, i.e. to the catheter tip for insertion into the user's rectum or stoma.
  • the irrigating liquid is transferred away from the expandable retention element, either directly to the catheter tip for flushing of the user's bowel without the irrigating liquid passing into or through the reservoir, or back to the reservoir.
  • a first relief valve may be provided, the valve being configured to open if pressure in a bowel of the user exceeds a first threshold limit in the first flow configuration, i.e. during expansion of the expandable retention element.
  • a first threshold limit in the first flow configuration, i.e. during expansion of the expandable retention element.
  • an amount of the irrigating liquid is transferred to the reservoir or expelled into a toilet facility if the valve, for instance, is placed in a connect portion of the catheter.
  • a second relief valve may be provided as a further or alternative safety measure, the second relief valve being configured to open if pressure in a bowel of the user exceeds a second threshold limit in the second flow configuration, i.e. during flushing of the user's bowel, so as to transfer an amount of the irrigating liquid to the reservoir or expel it into a toilet rather than keeping pumping irrigating liquid into the user's rectum or stoma.
  • liquid to be expelled due to overpressure out of the system i.e. into a toilet facility, rather than into the system itself, such as into the reservoir.
  • valve and tubing system may be operable to redirect the irrigating liquid to the reservoir if the pressure within the expandable retention element exceeds a predetermined threshold level.
  • the system may comprise:
  • a first actively controllable valve arranged in the tubing and/or the catheter at a position between the pump and the expandable retention element
  • a second actively controllable valve arranged in the tubing at a position between the pump and the catheter.
  • the actively controllable valves are operable in order to achieve the desired one of the first, second and third flow configuration. More specifically, when the first actively controllable valve is open and the second one is closed, irrigating liquid may pass to the expandable retention from the reservoir, or away from the expandable retention element. In the state wherein the first valve is open and the second one is closed, the direction of flow through the pump may be controllable by the direction of rotation of the pump motor.
  • the destination of irrigating liquid forced away from the expandable retention element may be selected by one or more passively controllable valves, such as check valves, or by one or more actively controllable valves.
  • At least one check valve is preferably provided for preventing a backflow of the irrigating liquid from the pump in a direction towards the reservoir, so as to force liquid withdrawn from the expandable retention element towards the catheter and into the user's rectum or stoma.
  • a user-operable control interface may be provided for controlling operation of the valve system and/or the pump. The user may for example select valve settings to select a flow configuration among the above-mentioned first, second and third flow configurations, and the user may further set operating parameters of the system, such as expansion pressure of the retention element, or an operating speed of the pump, i.e. flow rate of irrigating liquid for irrigation, or an irrigation duration.
  • the pump is operable to repeatedly expand and collapse so as to stimulate the peristaltic of the user's bowel.
  • Such action of the pump may be activatable by the user through the control interface. Its settings, such as duration or frequency of repeated expansion and collapsing may be defined through the interface.
  • expandable retention element may be incrementally expandable or collapsible, allowing the user to control expansion or collapsing of the retention element in response to the user's sensation of the state of expansion.
  • the control system may be configured to control a flow condition of the irrigating liquid at the catheter tip during anal or stoma irrigation.
  • the control system may hence comprise a controller for controlling operation of the pump, at least one sensor for determining a measure of pressure at at least one first predetermined position in the tubing system and/or the catheter during operation of the pump, and a processor for determining or estimating said flow condition at the catheter tip on the basis of said measure of pressure. Further, the control system may be configured to control the pumping operation of the pump in response to said measure of pressure.
  • the provision of the at least one sensor for determining a measure of pressure at at least one first predetermined position in the tubing system and/or the catheter during operation of the pump allows the processor to determine or estimate a flow condition at the catheter tip on the basis of such measure. For example, the rise of the pressure at a particular flow restrictor within the tubing system to a predetermined level may indicate the presence of irrigating liquid at the tip of the catheter. Similarly, the rise of pressure at the catheter tip itself may indicate the presence of irrigating liquid at the tip.
  • control system may comprise a memory for storing at least one pressure threshold value indicative of the presence of the irrigating liquid at at least the first predetermined position in the tubing system and/or the catheter and/or at at least one second predetermined position in the tubing system and/or the catheter.
  • control system may be configured to continue the pumping operation of the pump for a limited period of time after determination, by the at least one sensor, of a pressure value at the at least one first predetermined position which is at least equal to the pressure threshold value or a value derived therefrom.
  • one of the first and second predetermined positions may be a position at the catheter tip or in the vicinity thereof, in which case the control system may be configured to continue said pumping operation for a certain duration after the determination of said pressure threshold value. Accordingly, the amount of irrigating liquid expelled from the catheter tip may be accurately controlled by control of said duration.
  • thermo sensor may further be provided, which is connected to the reservoir for obtaining a measure of a temperature within the reservoir, the tubing system and/or the catheter.
  • the control system may be operatively connected with the thermo sensor, and the control system may be configured to determine a temperature within the reservoir before the irrigating liquid is filled or re-filled into the reservoir, determine an initial change of the temperature within the reservoir upon commencement of filling or refilling of the irrigating liquid into the reservoir, and predict a future asymptotic value of the temperature within the reservoir on the basis of at least the initial change.
  • the control system may further be configured to continuously determine a current temperature or a current rate of change of the temperature within the reservoir while the irrigating liquid is filled or refilled into the reservoir, and to continuously update the prediction of the future asymptotic value of the temperature within the reservoir on the basis of at least said current temperature and/or rate of change of the temperature.
  • thermo sensor and the control system a prediction of the future asymptotic value of the temperature within the reservoir once filled, notably of the irrigating liquid, may be made.
  • a prediction of the future asymptotic temperature value is continuously updated on the basis of the current temperature and/or the rate of change of temperature, a change of temperature of the liquid supplied to the reservoir, such as for example a change of the ratio between hot and cold tap water, is adequately reflected in the temperature prediction.
  • the temperature prediction may be communicated to the user, e.g. via a display of the system, thus allowing the user to ascertain if the temperature of the supplied liquid, typically tap water, is to be increased or decreased.
  • Fig. 1 shows an embodiment of a system for anal and/or stomal irrigation.
  • the system comprises a catheter 100 sized and configured for insertion into the rectum or stoma of a user.
  • a housing for a pump 101 is provided for transferring an irrigating liquid contained within a reservoir 102 to the catheter 100 and to an expandable retention element 104 in the form of a balloon configured to fixate the catheter within the user's rectum or stoma.
  • a control system 103 for the pump and a valve system (not visible in Fig. 1) is further housed within the housing of the pump 101.
  • Tube portion 1 19 connects the reservoir 102 to the pump 101
  • tube portion 121 connects the pump within the housing of the pump 101 to the catheter 100 and expandable retention element 104.
  • tube portion 121 includes separate conduits for connecting the pump to the catheter for expelling of irrigating liquid from the catheter tip and for expansion of the balloon 104, respectively.
  • Tube portion 119 attaches to dip tube 129 for sucking irrigating liquid from the reservoir 102.
  • the housing of the pump 101 is provided with a display 123 for communicating an operating state of the system and/or an asymptotic temperature value to the user, and user-operable control buttons 125 are provided as part of a user operable control interface for controlling operation of the valve system (not visible in Fig. 1) and/or pump 101.
  • a thermo sensor 128 attaches to a wall of the reservoir 102, a wired connection 127 being provided for communicating a signal from the thermo sensor 128 to the control system 103 within housing of the pump 101.
  • Fig. 2 illustrates an embodiment of a tubing and valve system of the system of Fig. 1.
  • pump 101 is connected to reservoir 102 via conduit 120 comprising a first check valve 124.
  • the conduit 120 is provided within tube portion 119 (see Fig. 1).
  • the first check valve 1 14 may be provided within tube portion 119, or within the housing of the pump 101 , or within the dip tube 129.
  • the tubing system Downstream of the pump (when seen in flow direction from the reservoir towards the catheter 100 and the balloon 104), the tubing system has two branches, one of which includes conduit 122 connecting to the balloon 104 via a first actively controllable valve 106.
  • the conduit 122 is provided within tube portion 121.
  • the first actively operable valve 106 may be provided within the tube portion 121 , or within the catheter 100, or within the housing of the pump 101.
  • the other branch of the tubing system downstream of the pump includes conduit 124 connecting to the catheter 100 via a second actively controllable valve 108.
  • the conduit 124 is provided within tube portion 121.
  • the second actively operable valve 108 may be provided within the tube portion 121 , or within the catheter 100, or within the housing of the pump 101.
  • the actively controllable valves 106 and 108 are controllable by the control system 103.
  • a pressure sensor 105 is provided for measuring pressure at at least one first
  • the pressure sensor 105 outputs a signal to the control system 103, which operates the pump and/or the actively controllable valves 106, 108 on the basis of said signal and other signals as described herein.
  • the control system 103 includes a processor for determining or estimating a flow condition at the catheter tip on the basis of the measure of pressure provided by pressure sensor 105, and the control system is configured to control the pumping operation of the pump in response to said measure of pressure.
  • control system continues pumping operation of the pump 101 for a limited period of time after determination, by the pressure sensor 105, of a pressure value which is at least equal to a pressure threshold value or a value derived therefrom.
  • the pressure sensor 105 is arranged in the tubing system 121 , 124 in the vicinity of the catheter 100 or within the catheter 100 itself.
  • Control system 103 further receives input from user-operable control buttons 125, and thermo sensor 128, and control system 103 communicates data to display 123.
  • the data communicated to display 123 may include a predicted future asymptotic value of the temperature of the irrigating liquid within the reservoir 102 as determined by thermo sensor 128.
  • the data may be continuously updated as the control system 103
  • First and second relief valves 1 10 and 112 are provided for allowing irrigating liquid to escape from the balloon 104 or from the catheter 100 in case the pressure therein exceeds the threshold pressure defined by the relief valves.
  • the first relief valve 110 drains liquid from the balloon 104 to the reservoir 102 in the case of excessive pressure within the balloon 104
  • the second relief valve drains liquid from the catheter 100 to the reservoir 102 in the case of excessive pressure within the user's rectum or stoma.
  • first and second check valves 114 and 116 are provided for preventing undesired backflow of liquid in the tubing system.
  • the first check valve 114 is provided within conduit 120 between the pump 101 and the reservoir 102 in order to prevent backflow of irrigating liquid from the pump 101 , or any position downstream of the pump, to the reservoir 102.
  • the second check valve 116 is provided in a side branch in the tubing system connecting conduit 124 to conduit 120.
  • the first and second check valves 114 and 1 16 may be provided within tube portions 119 and 121 (see Fig. 1) or within the housing of the pump 101 , or alternatively the first check valve 114 may be provided in dip tube 129.
  • Second check valve 116 may be provided within the catheter 100.
  • Figs. 3-5 show respective embodiments of flow configurations in the tubing and valve system of Fig. 2.
  • first actively controllable valve 106 is open, and the second actively controllable valve 108 is closed while the pump 101 operates. Accordingly, irrigating liquid is transferred from the reservoir 102 to the balloon 104 for expansion thereof.
  • second actively controllable valve 108 is open, and the first actively controllable valve 106 is closed while the pump 101 operates. Irrigating liquid is thus transferred from the reservoir 102 to the catheter 100, at the tip of which the liquid is expelled into the user's rectum or stoma so as to irrigate the user's bowel.
  • Figs. 5a and 5b In the alternative embodiment of Figs. 5a and 5b, in which the balloon 104 may be emptied into the reservoir 102 by forced action of the pump 101.
  • the dashed lines in Figs. 5a and 5b indicate respective flow configurations for expanding the balloon and purging thereof into the reservoir.
  • Fig. 5b indicates a flow configuration for expelling of the irrigating liquid through the catheter.
  • a first actively controlled valve AV1 is open, and a second actively controlled valve AV2 is closed.
  • the pump 101 operates in a first operating direction
  • purging i.e. collapsing of the balloon
  • the pump 101 operates in a second operating direction opposite to the first operating direction.
  • Figs. 6 and 7 illustrates exemplary curves of temperature of the irrigating liquid in the reservoir 102 during filling or refilling of irrigating liquid into the reservoir.
  • the initial temperature of the irrigating liquid within the reservoir 102 as determined by thermo sensor 128 is approximately 20°C.
  • liquid such as tap water
  • an initial change of the temperature within the reservoir is determined by the thermo sensor 128 upon commencement of filling or refilling of the irrigating liquid into the reservoir 120.
  • the initial temperature change is represented by elevated temperature TINT at time t1.
  • a future asymptotic value of the temperature, denoted "True” in Fig. 6, within the reservoir is predicted on the basis of at least the initial change.
  • a current temperature or a current rate of change of the temperature within the reservoir is continuously determined by means of thermo sensor 128 and control system 103, while the irrigating liquid is filled or refilled into the reservoir, and the prediction of the future asymptotic value of the temperature within the reservoir is continuously updated on the basis of at least said current temperature and/or rate of change of the temperature. More specifically, at the start of the filling or refiling procedure, an initial temperature change T1 is determined at a first point in time, t1. The first initial temperature change as represented by T1 is used for a first prediction, TA, of a future asymptotic temperature value of the irrigating liquid within the reservoir 102 once filled.
  • t2 when the temperature as determined by the thermo sensor 128 has reached level T2, the temperature of the liquid supplied to the reservoir changes, for example as the user changes the ratio of hot to cold water in the tap.
  • T3 a third temperature value
  • second prediction TB is made.
  • t4 a fourth temperature level T4 is reached, and the temperature of the liquid filled into the reservoir 102 changes abruptly for a second time.
  • the change of the supplied liquid is reflected by temperature T5 at time t5, on the basis of which a third asymptotic temperature prediction T ⁇ is made.
  • the predicted temperature values TA, TB and T ⁇ are shown to the user via display 123 (see Figs. 1-5) as they are determined by the control system 103.
  • Figs. 9A-9E illustrate displays of a user-operable control interface for controlling operation of the system.
  • the display provides instructions for the user to hold on to the catheter.
  • the "Empty" button emptying of the balloon
  • FIG. 9C illustrates a display shown to the user while emptying is in progress.
  • a pause button is provided allowing the user to pause emptying.
  • a paused emptying state of the system results in the display setting shown in Fig. 9D.
  • the user is instructed via the display to remove and dispose of the catheter, cf. Fig. 9E.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Epidemiology (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • External Artificial Organs (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne un système d'irrigation de l'anus et/ou d'une stomie comprenant un réservoir (102) pour le liquide d'irrigation, un cathéter (100) à insérer dans le rectum et/ou la stomie de l'utilisateur servant à introduire et à expulser du liquide d'irrigation par la pointe du cathéter, et un élément de rétention dilatable (104), par exemple un ballonnet, à fixer à la pointe du cathéter dans le rectum ou la stomie de l'utilisateur. Des systèmes de tubulure et de soupape assurent l'acheminement du liquide d'irrigation entre le réservoir et le cathéter et entre le réservoir et l'élément de rétention dilatable, une pompe (101) étant disposée à l'intérieur du système de tubulure. La pompe et le système de soupape peut être contrôlé pour aspirer sélectivement le liquide d'irrigation et l'introduire dans l'élément de rétention dilatable, transférer le liquide d'irrigation par le cathéter pour expulser le liquide d'irrigation depuis la pointe du cathéter dans le rectum ou la stomie de l'utilisateur, et pour retirer le liquide d'irrigation en provenance de l'élément de rétention et le purger.
EP15816651.2A 2014-12-19 2015-12-17 Système et procédé pour l'irrigation de l'anus et/ou d'une stomie Active EP3232996B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201470806 2014-12-19
PCT/DK2015/050402 WO2016095928A1 (fr) 2014-12-19 2015-12-17 Système et procédé pour l'irrigation de l'anus et/ou d'une stomie

Publications (3)

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EP3232996A1 true EP3232996A1 (fr) 2017-10-25
EP3232996B1 EP3232996B1 (fr) 2020-07-15
EP3232996B8 EP3232996B8 (fr) 2020-11-04

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US (1) US20170348138A1 (fr)
EP (1) EP3232996B8 (fr)
CN (1) CN107106757B (fr)
BR (1) BR112017012480A2 (fr)
RU (1) RU2703691C2 (fr)
WO (1) WO2016095928A1 (fr)

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CA2918607C (fr) 2013-08-01 2024-02-20 Convatec Technologies Inc. Raccord de poche a fermeture automatique
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GB201721956D0 (en) 2017-12-27 2018-02-07 Convatec Ltd Female catheter locator tip
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Also Published As

Publication number Publication date
RU2017124856A3 (fr) 2019-05-08
CN107106757A (zh) 2017-08-29
RU2017124856A (ru) 2019-01-23
BR112017012480A2 (pt) 2018-02-27
WO2016095928A1 (fr) 2016-06-23
RU2703691C2 (ru) 2019-10-21
EP3232996B1 (fr) 2020-07-15
US20170348138A1 (en) 2017-12-07
CN107106757B (zh) 2020-12-01
EP3232996B8 (fr) 2020-11-04

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